Toyota Camry (XV70): Lost Communication with Blind Spot Monitor Master Module (U0233)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U0233 | Lost Communication with Blind Spot Monitor Master Module |
The blind spot monitor sensor (slave) cannot receive signals from the blind spot monitor sensor (master) |
|
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
HINT:
- Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
|
1. | CHECK DTC OUTPUT |
(a) Turn the engine switch off.
(b) Turn the engine switch on (IG).
(c) Clear the DTCs.
Body Electrical > Blind Spot Monitor Slave > Clear DTCs(d) Check for DTCs.
Body Electrical > Blind Spot Monitor Slave > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTC U0233 is output | A |
|
No DTCs are output | B |
| B |
.gif) | USE SIMULATION METHOD TO CHECK
|
|
.gif)
| 2. |
REPLACE BLIND SPOT MONITOR SENSOR RH |
Click here
.gif)
|
| 3. |
CHECK DTC OUTPUT |
(a) Check for DTCs.
Body Electrical > Blind Spot Monitor Slave > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTC U0233 is output | A |
|
No DTCs are output | B |
| A |
| REPLACE BLIND SPOT MONITOR SENSOR LH
|
| B |
| END (BLIND SPOT MONITOR SENSOR RH WAS DEFECTIVE) |
READ NEXT:
Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors. Blind Spot Monitor Master
Buzzer does not Sound
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
Inspect the fuses for circuits related to this system be
Power Source Circuit
DESCRIPTION This circuit provides power to operate the blind spot monitor sensor. WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE: Inspect the fuses for circuits related to this system before perfo
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE V-BANK COVER SUB-ASSEMBLY
Click here
2. REMOVE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for ACIS)
(a) Disconnect the No. 1 vacuum switching valve assembly (for ACIS) connector.
(b) Disconnect the 2 vacuum hose assemblies from the No.
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Road Sign Assist System
DTC No. Detection Item
Link U010087
Lost Communication with ECM/PCM "A" Missing Message
U012587 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message
U012987 Los
